It could kill demons, monsters, and gods and also harm archangels. The Colt was one of the most powerful weapons the Winchesters ever encountered. However, Bobby Singer and the demon Ruby managed to make more bullets for it. It originally came with 13 bullets - eight were used before the Winchesters obtained it, and they used the other five.
On the handle is a carving of a pentagram, with much of the finish removed to give it an aged appearance. On the barrel of the gun is inscribed a Latin quote from Psalm XXIII:4, ' non timebo mala', meaning ' I will fear no evil.' The gun used in the series is a replica Colt Paterson 1836 cap and ball modified to fire metallic cartridges. The Latin inscription: 'I will fear no evil'